1/*
2 * Copyright (C) Research In Motion Limited 2009-2010. All rights reserved.
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public License
15 * along with this library; see the file COPYING.LIB. If not, write to
16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
18 */
19
20#pragma once
21
22#include "RenderSVGResourceContainer.h"
23#include "SVGMarkerElement.h"
24
25namespace WebCore {
26
27class AffineTransform;
28class RenderObject;
29
30class RenderSVGResourceMarker final : public RenderSVGResourceContainer {
31 WTF_MAKE_ISO_ALLOCATED(RenderSVGResourceMarker);
32public:
33 RenderSVGResourceMarker(SVGMarkerElement&, RenderStyle&&);
34 virtual ~RenderSVGResourceMarker();
35
36 SVGMarkerElement& markerElement() const { return downcast<SVGMarkerElement>(RenderSVGResourceContainer::element()); }
37
38 void removeAllClientsFromCache(bool markForInvalidation = true) override;
39 void removeClientFromCache(RenderElement&, bool markForInvalidation = true) override;
40
41 void draw(PaintInfo&, const AffineTransform&);
42
43 // Calculates marker boundaries, mapped to the target element's coordinate space
44 FloatRect markerBoundaries(const AffineTransform& markerTransformation) const;
45
46 void applyViewportClip(PaintInfo&) override;
47 void layout() override;
48 void calcViewport() override;
49
50 const AffineTransform& localToParentTransform() const override;
51 AffineTransform markerTransformation(const FloatPoint& origin, float angle, float strokeWidth) const;
52
53 bool applyResource(RenderElement&, const RenderStyle&, GraphicsContext*&, OptionSet<RenderSVGResourceMode>) override { return false; }
54 FloatRect resourceBoundingBox(const RenderObject&) override { return FloatRect(); }
55
56 FloatPoint referencePoint() const;
57 float angle() const;
58 SVGMarkerUnitsType markerUnits() const { return markerElement().markerUnits(); }
59
60 RenderSVGResourceType resourceType() const override { return MarkerResourceType; }
61
62private:
63 void element() const = delete;
64
65 const char* renderName() const override { return "RenderSVGResourceMarker"; }
66
67 // Generates a transformation matrix usable to render marker content. Handles scaling the marker content
68 // acording to SVGs markerUnits="strokeWidth" concept, when a strokeWidth value != -1 is passed in.
69 AffineTransform markerContentTransformation(const AffineTransform& contentTransformation, const FloatPoint& origin, float strokeWidth = -1) const;
70
71 AffineTransform viewportTransform() const;
72
73 mutable AffineTransform m_localToParentTransform;
74 FloatRect m_viewport;
75};
76
77} // namespace WebCore
78
79SPECIALIZE_TYPE_TRAITS_RENDER_SVG_RESOURCE(RenderSVGResourceMarker, MarkerResourceType)
80